Butterflies of the Welsh Harp

The following is a list of butterflies recorded at Brent Reservoir (awaiting update)

1. Grizzled Skipper Pyrgus malvae
   One record (undated)
2. Essex Skipper Thymelicus lineola
   Breeding
3. Small Skipper Thymelicus sylvestris
   Breeding
4. Large Skipper Ochlodes sylvanus
   Breeding
5. Orange-tip Anthocharis cardamines
   Breeding
6. Large White Pieris brassicae
   Breeding
7. Small White Pieris rapae
   Breeding
8. Green-veined White Pieris napi
   Breeding
9. Clouded Yellow Colias croceus
   Occasional migrant: four in the 1990s, regular in autumn 2000
10. Brimstone Gonepteryx rhamni
    Annual, in increasing numbers, probably breeding
11. Wall Lasiommata megera
    Bred until 1980s, now locally extinct
12. Speckled Wood Pararge aegeria
    Breeding
13. Small Heath Coenonympha pamphilus
    Has recently become extinct locally
14. Ringlet Aphantopus hyperantus
    Recorded for the first time in 2009 and now established
15. Meadow Brown Maniola jurtina
    Breeding
16. Gatekeeper Pyronia tithonus
    Breeding and increasing
17. Marbled White Melanargia galathea
    Now breeding following first record on 18 July 1999
18. Dark Green Fritillary Argynnis aglaja
    One on 18 July 1999
19. Red Admiral Vanessa atalanta
    Regular migrant, probably breeding
20. Painted Lady Vanessa cardui
    Regular migrant, breeding
21. Peacock Aglais io
    Breeding
22. Small Tortoiseshell Aglais urticae
    Breeding
23. Camberwell Beauty Nymphalis antiopa
    One on 23 April 1940
24. Comma Polygonia c-album
    Breeding
25. Marsh Fritillary Euphydryas aurinia
    Bred in 1700, now locally extinct
26. Small Copper Lycaena phlaeas
    Breeding
27. Purple Hairstreak Favonius quercus
    Breeding
28. White-letter Hairstreak Satyrium w-album
    First seen on 20 July 1995 and now established in small numbers
29. Holly Blue Celastrina argiolus
    Breeding
30. Brown Argus Aricia agestis
    The only record is of one on 9 August 2015
31. Common Blue Polyommatus icarus
    Breeding

References
Beddard R., Colmans J., Dobson J., Verrall A. (2002) “Butterflies”, in Birds of Brent Reservoir: The Natural History of the Welsh Harp (eds L. Batten, R. Beddard, J. Colmans, A. Self). London: Welsh Harp Conservation Group.

© Welsh Harp Conservation Group 2017

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